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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#if !defined(GMPDecoderModule_h_)
# define GMPDecoderModule_h_
# include "PlatformDecoderModule.h"
# include "mozilla/Maybe.h"
// The special NodeId we use when doing unencrypted decoding using the GMP's
// decoder. This ensures that each GMP MediaDataDecoder we create doesn't
// require spinning up a new process, but instead we run all instances of
// GMP decoders in the one process, to reduce overhead.
//
// Note: GMP storage is isolated by NodeId, and non persistent for this
// special NodeId, and the only way a GMP can communicate with the outside
// world is through the EME GMP APIs, and we never run EME with this NodeID
// (because NodeIds are random strings which can't contain the '-' character),
// so there's no way a malicious GMP can harvest, store, and then report any
// privacy sensitive data about what users are watching.
# define SHARED_GMP_DECODING_NODE_ID "gmp-shared-decoding"_ns
namespace mozilla {
class GMPDecoderModule : public PlatformDecoderModule {
template <typename T, typename... Args>
friend already_AddRefed<T> MakeAndAddRef(Args&&...);
public:
static already_AddRefed<PlatformDecoderModule> Create();
// Decode thread.
already_AddRefed<MediaDataDecoder> CreateVideoDecoder(
const CreateDecoderParams& aParams) override;
// Decode thread.
already_AddRefed<MediaDataDecoder> CreateAudioDecoder(
const CreateDecoderParams& aParams) override;
media::DecodeSupportSet SupportsMimeType(
const nsACString& aMimeType,
DecoderDoctorDiagnostics* aDiagnostics) const override;
static media::DecodeSupportSet SupportsMimeType(
const nsACString& aMimeType, const nsACString& aApi,
const Maybe<nsCString>& aKeySystem);
private:
GMPDecoderModule() = default;
virtual ~GMPDecoderModule() = default;
};
} // namespace mozilla
#endif // GMPDecoderModule_h_
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